Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Que tipos de navios foram entregues pela primeira vez em dezembro de 1942?
 ###Tabelas: CREATE TABLE highest_and_lowest_scoring_performances (highest_and_lowest_scoring_performances_id AUTO_INCREMENT PRIMARY KEY, Dance VARCHAR, Best dancer VARCHAR, Best score INT, Worst dancer VARCHAR, Worst score INT) CREATE TABLE head_to_head_record (head_to_head_record_id AUTO_INCREMENT PRIMARY KEY, Competition VARCHAR, Played INT, Spartak INT, Draw INT, Dynamo INT) CREATE TABLE list_of_representatives_who_resigned (list_of_representatives_who_resigned_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Party VARCHAR, Date of resignation VARCHAR, Replacement VARCHAR, Notes VARCHAR) CREATE TABLE arkansas_militia_act_of_1843 (arkansas_militia_act_of_1843_id AUTO_INCREMENT PRIMARY KEY, Division VARCHAR, Brigade VARCHAR, Regiment VARCHAR, Colonel VARCHAR, County VARCHAR) CREATE TABLE shipyards_in_the_program (shipyards_in_the_program_id AUTO_INCREMENT PRIMARY KEY, Yard Name VARCHAR, Location (City, State) VARCHAR, 1st Ship Delivery Date VARCHAR, Ship Types Delivered VARCHAR, Total Number of Ways VARCHAR)  
SELECT Ship Types Delivered FROM shipyards_in_the_program WHERE 1st Ship Delivery Date = december 1942